RU-80 is a "U" border came with a slightly rounded cap in a 3/16" face and a 5/32" channel that accepts most standard art glasses. We proudly sell Cascade lead came. These superior cames are made from a closely controlled alloy that marries superior structure with high strength. Starting with 100% pure lead, Cascade then adds precise quantities of tin, antimony, copper, and bismuth to create an alloy that can be stretched to its breaking point but still maintain its structure. As well, this special alloy also resists oxidation, making for easier soldering and permitting a longer tarnish-free shelf life. The lead is sold in its original 72" length as a carefully coiled roll shipped in a box.